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Old 03-29-2004, 07:04 PM   #11
Jon [in CT]
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Member#: 2992
Join Date: Nov 2000
Chapter/Region: NESIC
Location: Connecticut, USA
Vehicle:
02 WRX Sedan
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I think an important figure of merit to consider when evaluating an intercooler is its efficiency, which seems to be missing from list of data for each model intercooler. Efficiency, as a percentage, is defined as:

TIN - TOUT
_________ x 100

TIN - TAMB

Where:
TAMB is ambient air temperature,
TIN is the temperature of air entering the intercooler,
TOUT is the temperature of air exiting the intercooler.

So, an intercooler whose efficiency is 80% removes 80% of the heat added by the turbocharger and would generally be preferred over an intercooler whose efficiency is 75%.
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Last edited by Jon [in CT]; 03-29-2004 at 09:30 PM.
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